homeSuppo Audio - Simple is Beautiful

 

The commander - EL34 - V1

Silver version & Platinum Version

two version share the same design. the only difference is tubes,

 

el34

Technical Feature:

Input Power
110V-240V AVAILABLE
Power

35watts x 2

in Class AB Push and Pull

Output Tube 

Silver Version: EL34 x 4 (Shuguang)

Platinum Version: EL34 *4 (Shuguang Treasure)

Driver Tube

Siver version: :12AT7*1+6N6*2

Platinum Version : 6N11*1 + 6CG7*2 (RCA,GE, WE, Silvania..)

Signal/Noise Ratio 
90db
Ohms 
8ohm or 4ohm
Frequency 
0db  25HZ--50KHZ
-3bd   18HZ--70KHZ
Audio Input

2 groups

A for CD, B for Pre-amp

Distortion 
1% @ 35W
Input Sensitivity
1v 
Power Consumption
Max 240w
Weight
16kg

Bias adjustable

 

 

 

 
Tubes installed EL34 Silver EL34 Platinum
Driver Tube

12AT7*1

6N6*2

6N11*1

6CG7*2 (RCA/GE/WE..)

Power Tube
EL34 Shuguang
EL34 Shuguang Treasure

Important Notice

This Amp is sold as DIY components, Not a completed consumer product. You can use this AMP only when you have technical knowledge and understanding about tube amplifie.

The Tubes supplied with is NOT installed. You need to install the Tube your self.

Some parts could be loss in transit. Therefore, You should open the case and check the components before connecting power.

Make sure you have good grounding earch connected of your power source.

If you have any question, please email to audio@suppomodel.com

 

 

The bias adjustment:

1) minimize the volum. power on for 20sec.
2) Check four tubes negative voltage(reading point). See whether there are any one over 0.5V, if yes, check the tube or volum pot.
3) if no, adjusted to 0.45V(0.45ma).
4) power up for 10 minutes, and check again, adjust if necessory.
5) Not necessory is exceptly 0.45V. but try to adjust all tubes as close as possible to 0.45V

*there is a hole near by the negative pin you can measure the vol (reading point)
*Some large EL34 tube can adjust to 0.60V.
 

  The EL34 Prototype Beta AMP  
  EL84EL34